Shake-out apparatus for foundry flasks



June 11, 1935. w. F. PIPER 2,004,292

SHAKE-OUT APPARATUS FOR FOUNDRY FLASKS Filed Feb. 20, 1933 2Sheets-Sheet l June 11, 1935. w. F. PIPER SHAKE-OUT APPARATUS FORFbUNDRY FLASKS 2 Sheets-Sheet 2 Filed Feb. 20, 1933 Patented June 11,1935 a i a QUNIT S A -E1 O CE 1, Y 4 9 g a a SHAKE-OUT APPARATUS on mimein FLASKS Walter F. Piper; Oak Park, 111., 'ass ignor to T he Beardsley& Piper Company; Chicago, Ill.,"a

corpo'rationoi Illinois v Application February 20, 1933, serialfivo;657,511

6 Claims. (crass-72 The present invention relates generally to whichlike numerals of reference denote correshakeeout apparatus for foundryflasks. More sponding parts throughout the several views "particularlythe invention relates-to that type of a Figure 1 is a side elevationofan apparatus flask shake-out apparatus which effects shake- I embodyingtheyinvention. Fig.2 is a plan. Fig.

out of the flask by vibrating the latter at com- 3 is a vertical sectionthrough one of the viparativelyhigh speed and includes as theoperbrating devices; Fig. l is an end elevationof the ating partthereof, a flask vibrating device which vibrating device of Fig, -3.-Fig. 5 isa fragmenconsists of acylinder, aslidably mounted'hamtary planview. of a modified form of a flask mer .in one end of the cylinder, andapneumat-J shake-out apparatus.

icallyoperated piston in the other endofthe The::Jshake;-out apparatusof Figures 1,v 2 .3 Q

cylinder for imparting blows in rapid succession and r4 comprises a pairof channel beams Ill to the hammer for flask vibrating purposes. 9 gwhich areadaptedthroughthe medium of a pair,

One object (of the inventionwis to provide an of vibrating'devices l2 tosupport a flask l8 and apparatus of this type in-whichthe hammer of aresecured on the top of a grating ll through theivibrating device isdesigned to engage die which; the sand discharged from the ifla'sk isrectly and form a rest or; support forpthe flaskadapted tonfall intoapit or-onto the floor. The i andnduring operation of the devicetransmits, vibratingdev'ices [2 are of like constructionvibrationsdirectly to the flaskcwithout-jarring Theyare secured on'top 0f-andbetween the on transmitting shock to the cylinder of thei dechannelbeams ID-and are positionedto underlie I .Another object of theinvention is to provide; *Eachvvibrating device comprises: a casing 13 aflask shake-out apparatus of the type under in which: is formedavertical cylinder ,Madaptconsideration which comprises. a:supporting;ed-ftoreceiveairsunder pressure; a piston 15 structure and aplurality of vibrating devices slidable in the cylinder 14; and ahammer. I6

' which are supported on the supporting structure provided with a stem"16* slidably fittedin the 25 in'hori'zontally spaced relation and in,anupt-l upperJend ofrthecylinder and adapted toibe, standing positionand arearranged so; that the impacted or struck bytthe' piston tl5,-.andalso hammers thereof engagedifierent portions of the. provided with anenlarged'head Iii positioned flask. 1,. i i above the casing andoutsideof the cylinder.

WAfurther objectof theinvention is to provide; The v casinggl3 is:provided with integral lugs 30 it 1 aflasksh'ake-out apparatus of thelast men I3 for bolts ll which are adapted to secure tioned" characterin which the hammers .ofthe the'casing in fixedYposition on the beams10. lvibrating deviceshaveen1arged,;rounded heads The sides of flask l8are adaptedto rest di-" for, tiltably sustaining or supporting theflaskrectly on the topsiof the heads 16 of the ham-E 5;. and the supportingstructure ,is & provided bemers I 6 of the vibrating devices. Theseheads tween the vibrating'devices with a bar for limitare positionedover the top Walls of the, cylinders] ingtilting of the flaskandlnholding it in place I4 andu'are adapted normally to rest on said onthe heads of the hammers. 1; walls. An attribute of this constructionisthat A still further object of the invention is to the flask rests onand is directly supported by 0: provide a flask shake-out apparatusofthe type i the hammers, so that the blows imparted to the v 40 and'character under consideration which is gem hammers willibe'atrahsmitted directly tothe erally of new and improvedconstruction,consists flask and not 'torthe casings of the vibrating deof buta small number'of partsand may bemanvices. The" top. surfaces of 1the head 16 are; ufactured at alow and reasonable cost." a convex topermit the flask tofrock duringblows 5,-. Other objects of the inventionand thevarious by the harnm'ersfllAbar IS with upstandinglugs advantagesandcharacteristics of the present I9 at its ends is welded to thebeamsulfl and]v shake-out apparatus will be apparent from aextendstransversely ofthe beams l0 and under consideration of thefollowingndet'ailed descrip the flask a; :suflicientmdistance to preventthe tion.%

flask from "tilting transversely 01f the-headsfof Q; The/inventionconsists in the several novel the hammers. The flaskis, confined againstdis-v features which are hereinafter set forthand are placementlongitudinally of thebeams lll'by;vermore: particularly defined byclaims at the contical guide plates 20. which are secured to the clusionhereof. i '1 v casings I 3Vby certain of the bolts ll. This ex- In thevdrawings which accompany andform a emplifies an apparatus for shakingout a founpart OfxthiS specification or disclosure and in dry flask inwhich the flaskvrests directlyon the55 der pressure, preferably air,which is delivered I 3 through a pipe 22 which isisuitably coiiiiected;.

into an inlet-chamber 2| in the casing usually by a flexible hose, to asource of com pressed air. The piston l5 is -provided.withtwo--circumferential grooves l5 fand l5fiwhich for in effect, threepiston-sections l5,|5 "an-d I5 The upper end of the piston is adapted toimv pact against the lower end ofthestem' lB oi' the hammer It to impartblows in rapid suc-- cession to the hammer. Ports 24 extend axiallythrough the piston-section: I 5 "and por ts 25.5:e'X tend axiallythrough th'e pistomsection I5? Ari annular inlet' channel 21 for-med inthe casing' around the cylinder I 4 isincommunication Witl'i theginlet-chamber- 2"l Annular exhaust'mham' nels 25 and 26 are formed inthe I oylinderwall and lead to an exhaust-chamber 2 h Assum--ingthe'pistonl 5 to be'in -the position shown' in Fig. 3, air underpressure willflowfrom: channel 2 l a into the groove I 5 inthe pistonand through ports 24*t0 exert a pressure' upon theipi'stonito impartanupward stroke= tothe piston and a blow .to the lower end of thehammer=stem 16 During' this stroke, thepiston sectio'n-:'15 will cut offthe supply of compressed air; After the a blow has been" struck, theair? which has imparted the'upward stroke to: the": hammer wi1lescapethrough channel? 25 aHd gIOOVG lfi ft'o' the exha'ust chamber 21 Asr-thehammer reaches its upward limit, air will' fiowfrominlet-cham ber 21'throughfa small port 28=into groove ['5 of the piston to exert? a:downwardspressurd 011: the topiof' se'ctlon I 5F a'ndthe top? of sectionI 5* to which air passes via ports 23, toareturn thehammer to itsloweredposition;

return stroke; :the'air from the topi of the piston: willbe' passedthrough ports' 2 5;; groove [5 and" This channel 25 to the exhaust'chamber 21;: operation is repeated-- in: rapid: succession -to im partthe b1ows to the hammerto vibrate the flask;

A sheath -of fieizible material; such as asbestos belting; is fittedaround the periphery of the head 16 of each l'iammer' and: dependsaround the-outside of theuppenportion of the cylin der=, to 'prevent'sa'nd from passinginto the cyl-" 'I'liis' sheath' is secured: to-ythehead: of the hammer by a 1 binding wire 31' which ties the: sheath in anannulai g-r'oove 32-in the head of ind'er.

the hammer;

Fig. 5 shows shake-out apparatus in whichprovision is made fbr'adjust'ab'ly mounting one 'of' the: vibrating:-

de'vices so" it" c'aribe adjusted 'to andfrom" the other to adapt Y theapparatus for of difm this form ofapparatus, a

ferent' widths; link- 34 has oneof its ends pivoted to the casingo'fthe:movable; device and its'other endwtda lever 35 which is pivoted to' oneof 'the channel beams HI; The trip-flanges of'the' beams I are providedwith a plurality of bo'lt holes" for thebolt's I1 When-the bolts l1are'remove'd; the movable vibrating de'Vice -can be: shifted by thelever 35 longitudinally of" thebeams to bring it intothe desiredp'o'sitl'ofi according i30 During? the" slightly' difiereht form of thewidth of the flask and the bolts I! can then be passed through theaforesaid bolt holes to lock the vibrating device in its desiredposition.

The invention exemplifies a flask shake-out apparatus in which the flaskrests directly on a fluid operated hammer so that the blows imparted tothe hammer bythe piston w'ill be imparted directly to the flask andinthis way the flask is sharply and efiiciently vibrated to cause thematerial or castings therein to be dislo'dged"from: the flasks Ifdesired, the invention may" be used with a single vibrating device ormore than two.-

The invention is not to be understood as restricted to the details setforth since these may be modifiedwithin the scope of the appended claimswithout departing from the spirit and scope-cf the invention.

I claim:

1. 1 a a flask shake-out apparatus of the character described, thecombinati'on' ofa suppo'rt'ing structure; a vibratingdevice mountedthereof T an -e rila'rg'ediroundedhead for support in'gthe fiaskdirectly thereon and so that it is tilta ble relatively to the device; apiston in the 1ower end: of the: cylinder," and fluid r ssuremeans -for'movin thepiston up and dowmin rapid su'ccession in order to impart blowsto the hammer" so: as to transmit vibrations viathe ctly"to the flask;and bar: means? n 'the supporting 'structure independently oftheflv'ibr'ating device" for limitingltilti'n'gi of/the fiask and:holding it in place-on the head:

2 In aflask shake-out apparatus of. the character described, thecombination of a sup porting: structure? a flask vibrating; devicemounted on the structure andcomprising a cylinder with oneend thereofopen and itsother end closed; a: piston slid'a'bly mounted within theclosed end of 'the cylinder; fluid pressure": means-Tori reciprocatingthe piston in: rapid suc cession 'withinisaid closed "end ofthecylinder; and: a slidably mo'unte'di hammer: in: thenopen end of thecylinder provided at the outer 'en'd': thereof with a; fullyexposedrigi'dnhe'ad'ifor engaging directly a portion" of the flask;- andadapted during reciprocation of: the pistonto receive blows from thelatter and to: transmit such blowsivia the head. directly to the 'flaskwithout! imparting: shock" to 'the cylinder? and" means associated 'withthe supporting structure: and independent of the hammer for holding:the: flask in a shake-out-positionwith respect 'to said head.-

Inra fiask shake -out apparatus of the char acter described," thecombination of: a: sup'porting structure, aflask vibrating devicemountedin an upstanding position: on" the structureand: comprising asubstantially vertical cylinder with an: cpen upper end; a I pistonslidably mounted the: lower end- 0f the" cylinder-fluid pressure meansfor" moving the piston up and down in: rapid successionin": said otherend oi the cylinder, and a slidably mounted hammer in: the upper" end ofthepylinder provided at the outer: end thereof with a fully. exposed;en-'-. 2 larged; rounded head for" supporting the" flaskdirectly thereonand so that it is-tiltable*re1a;- tively to the device and adapted'during reciproca'tion of the: piston tw receive blows from the:

latter. and to transmit such blows via the head directly to the flaskwithout imparting shock to the cylinder; and meansindependent of thehammer for limiting tilting of the flask and holding the flask in directengagement with and.

in place on the head.

4. In a flask shake-out apparatus of the character described, thecombination of a supporting structure; a pair of laterally spaced,vibrating devices mounted vertically on the supporting structure andadapted to support the flask, each of said devices comprising anupstanding cylinder with an open upper end, a hammer slidably mountedinthe upper end of the cylinder and embodying at the top thereof arigidhead designed and fully exposed to engage directly a portion of theflask, and a pneumatically oper ated piston in the lower end of saidcylinder adapted to move up and down in rapid succession and to impartblows to the hammer so as to transmit vibrations to the flask via thehead;

and bar means mounted on the supporting struc ture between the twodevices and entirely independent of the said devices forengaging the;

inder and embodying at the top thereof an enlarged head designed andfully exposed to engage directly one of the end portions of the.

flask, and a pneumatically operated piston in the lower end of saidcylinder adapted to move up and down in rapid'succession and to impartblows to'the hammer so as to transmit vibrations to the flaskdirectlythrough the head; and means mounted on the supporting structure betweenthe two vibrating devices for engaging the flaskloosely and holding itinplace on the heads of said devices.

6. In a flask shake-out apparatus of the charthe side portions of theflask and supporting acter described, the combination of a supporting.

structure; a pair of laterally spaced, vibrating devices mountedvertically on. the supporting structure and adapted to support theflask, each of said devices comprising an upstanding cylinder with anopen upper end, a hammer slidably mounted in the upper end of thecylinder and embodying at the top thereof an enlarged rounded head "forengaging a portion of the flask directly and supporting the latter 'sothat it is tiltable relatively thereto, and a pneumatically operatedpiston in thelower end of said cylinder adapted to move up and down inrapid I succession and to impart blows to the hammer so as to transmitvibrations tothe flask via the head; and bar means mounted on thesupporting structure between the vibrating devices for limiting tiltingof the flask and holding the latter in place on the heads of saiddevices.

WALTER F. PIPER.

